Classified Systems Administrator

This position requires a TS/SCI clearance with CI Polygraph security clearance.

Our Information Technology team at STR is a robust assembly of highly skilled professionals dedicated to ensuring the seamless operation and security of our organization's technological infrastructure.

Our Enterprise IT group is the backbone of our daily operations, providing comprehensive support and management of our software applications and hardware systems to ensure maximum efficiency and uptime.

Our Classified IT group specializes in the secure handling and dissemination of sensitive information, operating under stringent protocols to protect national security interests.

Our Enterprise Cybersecurity group stands as the vigilant guardian of our digital frontiers, employing cutting‑edge technologies and proactive strategies to defend against cyber threats and maintain the integrity of our systems. Together, this formidable team works in concert to deliver cutting‑edge IT solutions that empower our defense capabilities and uphold our commitment to national security.

We are seeking a Systems Administrator with a TS/SCI clearance with CI Polygraph to support our senior administrators in implementing, deploying, and maintaining Linux (Red Hat, CentOS, Ubuntu) and Windows operating systems in traditional and virtualized environments across a variety of hardware solutions. The position is based in Woburn, Massachusetts only (no remote). After‑hours support is required for maintenance and patching when needed.

• Professionally support senior administrators, Information System Security Officers (ISSO), management, researchers, and others supporting the customers.
• Configure and maintain NAS Storage, Networking, Firewall, and Directory Services such as MS Active Directory management and Group Policy administration.
• Perform performance monitoring, results analysis and enhancement, as well as process automation using Power Shell scripting and other available technologies.
• Provide daily support, systems maintenance, problem resolution, tracing and project support.
• Create and maintain installation and configuration Standard Operating Procedures (SOPs).
• Maintain current knowledge of DoD security and technical guidelines and the organization’s policies.
• Provide support for production and development environments.

• BS or MS with 3–5 years of experience or equivalent work experience in lieu of a degree.
• Linux Administration (Red Hat, CentOS, Ubuntu).
• Windows OS Administration.
• U.S. citizenship required for a TS/SCI clearance with CI Polygraph.

• Enterprise Virtualization Tools.
• Multi‑Factor Authentication.
• Public Key Infrastructure.
• Web Server.
• Active Directory including Group Policy, LDAP backend, and Replication.
• Effective utilization of Security Technical Implementation Guidelines (STIGS) and Security Content Automation Protocol (SCAP) Content and Tools.
• Host‑Based Security System (HBSS) implementation and maintenance.
• Assured Compliance Assessment Solution (ACAS) support.
• Current knowledge of DoD Ports, Protocols, and Services (PPS).

Full‑Time Salary Range: $115,000 – $160,000. The salary range listed is based on external market data. Offers are based on factors such as the candidate’s experience, education, training, key skills/critical skills, security clearances, and prevailing market and business conditions.

STR is an equal‑opportunity employer. We are fully dedicated to hiring the most qualified candidate regardless of race, color, religion, sex (including gender identity, sexual orientation and pregnancy), marital status, national origin, age, veteran status, disability, genetic information or any other characteristic protected by federal, state or local laws.

If you need a reasonable accommodation for any portion of the employment process, email us at appassist and provide your contact info.

Pursuant to applicable federal law and regulations, positions at STR require employees to obtain national security clearances and satisfy the requirements for compliance with export control and other applicable laws.